[Research] 2026-08-08 JADISS research | 삼성전자, 광무, 닷밀, 동양

This summer, a record-breaking heatwave is anticipated, bringing about diverse changes across industries. Beyond a mere weather event, it could positively influence specific sectors such as cooling appliances, food and beverages, and power, yet simultaneously exert complex effects on overall economic activity and prices. Explore the industry-specific ripple effects and key checkpoints of the heatwave with JADISS market analysis.

The anticipated record-breaking heatwave and sweltering summer are emerging as a key issue, driving various changes not only in our lifestyles but across industries. Rising temperatures lead to a surge in cooling demand, directly impacting the energy sector through increased power consumption. Furthermore, shifts in consumer patterns due to reduced outdoor activities and increased indoor activities can have ripple effects on the retail and service industries. It is crucial to note that these seasonal factors can become significant variables influencing the overall economic flow.

The ripple effects of the heatwave can spread across a wide value chain. Firstly, increased sales of cooling appliances positively impact related component and material industries, while increased power demand can affect the performance of companies involved in power generation and transmission infrastructure. Additionally, increased consumption of beverages, ice cream, and other food and beverage products due to the heat can invigorate relevant manufacturers and distribution channels. Conversely, reduced work efficiency at construction sites or poor crop yields could negatively impact specific industries, acting as cost-push pressures across the entire supply chain.

Industry scenarios may vary depending on the intensity and duration of future heatwaves. If the heatwave is prolonged, demand for cooling-related products and services is expected to remain steady. However, if the heatwave subsides earlier than expected or temperatures moderate, the surging demand could rapidly slow down, leading to inventory burdens for related companies. Meanwhile, for a representative stock like Samsung Electronics, net selling by foreign investors and institutions has been observed over the recent 5 and 20 days, while individual investors showed net buying. Furthermore, a significant increase in the short-selling ratio recently can be interpreted as reflecting the market's short-term uncertainty towards individual stocks. This suggests that even amidst positive overall industry trends, there can be supply and demand volatility due to individual large-cap issues or changes in the macro environment.

Looking at technical indicators, Samsung Electronics currently shows an RSI of 46.73, indicating a neutral level, and the MACD is below the signal line, suggesting a short-term bearish trend. Based on the Bollinger Bands, the stock price remains below the middle line (246,450 KRW), indicating downward pressure. Recent 5-day and 20-day returns recorded -12.0% and -18.95% respectively, showing a short-term decline.

Samsung Electronics' RSI is in the neutral zone, but MACD indicates a downtrend, and the stock price below the Bollinger Band middle line suggests short-term downward pressure. Recent 5-day and 20-day returns have shown significant declines, requiring market caution.

The Widespread Impact of Heatwaves on Industries

Record-breaking heatwaves are expected to significantly increase cooling demand and power consumption, directly affecting the energy sector. Increased indoor activities will shift consumer patterns in retail and services, impacting a broad value chain. While cooling appliances, related components, and food & beverage consumption may see positive trends, reduced efficiency in construction and poor crop yields could lead to cost pressures across the supply chain, requiring careful attention.

Industry Trends and Individual Stock Analysis During Heatwave Scenarios

Industry scenarios can vary based on the intensity and duration of the heatwave. A prolonged heatwave sustains demand for cooling-related products, but an early end could lead to demand slowdown and inventory burdens. For individual stocks like Samsung Electronics, recent net selling by foreign and institutional investors, coupled with increased short-selling and bearish technical indicators (neutral RSI, bearish MACD, below Bollinger Band middle line), suggests short-term downward pressure. JADISS market analysis helps decipher these complex factors to understand market movements.

Smart Investment Strategies with JADISS

Trends in heatwave-related industries carry inherent volatility, making predictions challenging. JADISS provides insightful analysis to inform investment decisions, covering various scenarios such as potential growth in utility and cooling appliance sectors during prolonged heatwaves, or demand slowdowns if the heatwave ends early. Leverage JADISS market research to adapt flexibly to market changes and formulate informed strategies.

Evidence (JADISS synthesis)

• Samsung Electronics recorded net selling of 1,298,530 shares by foreign investors and 2,932,869 shares by institutions over the recent 5 days.
• Samsung Electronics recorded net buying of 3,840,209 shares by individual investors over the recent 5 days.
• Samsung Electronics' recent short-selling ratio of 11.39% increased by 3.834% compared to the 20-day average.

Hold view

If the heatwave is prolonged beyond expectations, or if performance improvements in related industries become visible, one might observe and monitor further changes. A positive scenario could be considered, especially when a robust growth trend is confirmed in the utility sector or cooling appliance segment due to increased power demand.

Trim / exit view

If the heatwave ends earlier than expected, or if the demand increase in related industries falls short of expectations, or if negative factors such as production disruptions due to the heatwave become prominent, a reduction perspective should be considered. Caution is particularly needed when overall economic burdens increase due to intensified power shortages or soaring agricultural product prices.

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Related: 삼성전자, 광무, 닷밀, 동양 (chart focus: 삼성전자)

Close 231,000 · RSI 46.73 · 5D -12.00% · 20D -18.95%

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